If you were intrigued by Robin's struggle to define his identity and reality within the artificial constructs of the Glasshouse, you'll find Permutation City just as compelling. Egan's novel plunges you into the philosophical depths of digital consciousness, following Paul Durham and others as they question the very nature of self in simulated worlds. The book raises profound questions about what it means to exist—perfect for readers who enjoyed the existential twists and speculative thought experiments in Glasshouse.

If you enjoyed the way Glasshouse used its controlled society as a social experiment to explore human nature and systems of control, you'll appreciate The Dispossessed. Le Guin's novel follows Shevek, a physicist navigating the tensions between two radically different societies—one capitalist, one anarchist. The book deftly examines how environments shape behavior and the possibilities and dangers of engineered utopias.

If the relentless pace and ever-evolving stakes of Robin's fight for survival in Glasshouse kept you turning pages, you’ll get hooked by Red Rising. Darrow's infiltration of a brutal society, his rapid transformations, and the constant danger make for a thrilling read where every decision could mean life or death. The novel’s breakneck speed and tension will satisfy your craving for action-packed stories full of deception and high stakes.

Fans of the inventive future tech and detailed worldbuilding of Glasshouse will love The Quantum Thief. Follow master thief Jean le Flambeur as he navigates a Martian society defined by radical privacy, shifting identities, and mind-boggling quantum technologies. Rajaniemi’s world is as intricate and thought-provoking as anything in Stross’s work, rewarding readers who relish a speculative setting packed with original ideas.

If Robin's morally grey choices and the ethically fraught world of Glasshouse captivated you, then Altered Carbon will be right up your alley. Meet Takeshi Kovacs, a former soldier with a checkered past, navigating a society where bodies are interchangeable and the lines between right and wrong blur at every turn. The book's noir undertones and complex antiheroes echo the best of Stross’s character-driven storytelling.